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[Scripting] minutes - 8 June 2020

From: Kazuyuki Ashimura <ashimura@w3.org>
Date: Tue, 16 Jun 2020 21:53:22 +0900
Message-ID: <87zh93p3y5.wl-ashimura@w3.org>
To: public-wot-wg@w3.org
available at:
  https://www.w3.org/2020/06/08-wot-minutes.html

also as text below.

Thanks a lot for taking the minutes, Zoltan!

Kazuyuki

---
   [1]W3C

      [1] http://www.w3.org/

                               - DRAFT -

                             WoT Scripting

08 Jun 2020

Attendees

   Present
          Kaz_Ashimura, Cristiano_Aguzzi, Daniel_Peintner,
          Tomoaki_Mizushima, Zoltan_Kis

   Regrets

   Chair
          Zoltan

   Scribe
          zkis

Contents

     * [2]Topics
         1. [3]Prev minutes
         2. [4]issue#216
         3. [5]PR 218
     * [6]Summary of Action Items
     * [7]Summary of Resolutions
     __________________________________________________________

   <scribe> scribe:zkis

Prev minutes

   <kaz> [8]June-1

      [8] https://www.w3.org/2020/06/01-wot-minutes.html

   Past minutes approved

issue#216

   <dape> -->
   [9]https://github.com/w3c/wot-scripting-api/issues/216

      [9] https://github.com/w3c/wot-scripting-api/issues/216

   Daniel: fetching in node-wot was quite cumbersome
   ... it was difficult to deploy applications
   ... discovery isolates the fetching, we get the TD and it's
   fine
   ... so this looks better, but we need to experiment with it

   Zoltan: it seems we have consensus on the discovery approach

   Cristiano: we'll also see how it goes in the Discovery calls

PR 218

   <dape> [10]https://github.com/w3c/wot-scripting-api/pull/218

     [10] https://github.com/w3c/wot-scripting-api/pull/218

   Zoltan: Added InteractionData instead of any in the handler
   callbacks
   ... added the missing subscribe and unsubscribe handlers
   ... to ExposedThing
   ... added the missing algorithms in ExposedThing and adapted
   the existing ones for using InteractionData

   Daniel: we need to update node-wot and get experience in
   plugfest

   Cristiano: so this updates ExposedThing - will check it soon

   Daniel: if we read a Property, we can pass along a formIndex
   ... for single reads
   ... but how to deal with InteractionOptions and formIndex for
   readMultiple or readAll

   Zoltan: we have a Form with an op=readmultipleproperties
   ... so I don't see a problem there

   Daniel: for readMultiple we don't need a Form

   Zoltan: if we cannot do readmultiple with single network
   request, there is no point for it

   Cristiano: agreed, this is tricky to implement and we should
   raise an issue with TD spec

   Daniel: we could use multiple Forms for it

   Zoltan: but then we need a way to say to use ALL the Forms,
   since now we only use only one Form

   Daniel: let's indeed start with an issue in the TD spec, will
   create the issue

   <kaz> [11]8.6 Handling requests for reading multiple Properties

     [11] https://pr-preview.s3.amazonaws.com/w3c/wot-scripting-api/218/3df8c82...zolkis:9e1813d.html#handling-requests-for-reading-multiple-poperties

   Daniel: the current algorithm for ExposedThing side makes sense
   to me but not on the ConsumedThing, which required a single
   Form
   ... it would be the same for looping readProperty in the app
   ... no, since it's done inside the implementation

   Cristiano: if there is no single network request, there is no
   point for readMultiple

   Daniel: looping would make sense since it's well balanced
   between client and server

   Zoltan: but that should be specified that way in the TD spec

   Daniel: OK, we'll discuss it in the TD issue

   Cristiano: MODBUS supports reading multiple properties

   Zoltan: it still needs a Form to spec how to make the request
   ... let's check the same for writeMultiple
   ... we could also cover it by an Action to read/write multiple
   properties

   Cristiano: yes, in the past we had that, but this is a
   convenience

   Zoltan: we are missing the input from the Action in this case

   Cristiano: right

   Zoltan: Daniel, could you please also include an agenda point
   for the F2F to discuss this?

   Daniel: OK

   [adjourned]

Summary of Action Items

Summary of Resolutions

   [End of minutes]
     __________________________________________________________


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Received on Tuesday, 16 June 2020 12:52:32 UTC

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